Femtocell Access Mode Selection Based on Macrocell Channel Detection
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Solution Overview
Problem
In wireless communication networks, especially in areas with high building penetration loss, maintaining acceptable signal quality for indoor services is challenging, and existing solutions do not efficiently optimize bandwidth and resource allocation for small-coverage base stations like femtocells.
Innovation Solution
A method and apparatus for selecting access modes for small-coverage base stations, determining whether a target channel is used by a macrocell, and configuring the access mode to either closed, open, or hybrid access based on this determination, allowing femtocells to operate effectively in the presence or absence of macrocells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If femtocells operate in open access mode to provide large coverage and capacity, then network coverage and user access are improved, but interference with macrocells increases and resource allocation efficiency deteriorates
Solution Approach 1:
The patent implements dynamic access mode selection where femtocells can switch between open, closed, and hybrid access modes based on real-time macrocell presence detection. This dynamic adaptation allows the system to optimize coverage and capacity while minimizing interference by selecting the appropriate access mode for current network conditions.
Solution Approach 2:
The system changes operational parameters (access mode configuration) based on detected macrocell presence. When macrocells are detected on target channels, the femtocell switches to closed or hybrid mode; when no macrocells are present, it operates in open mode. This parameter adaptation resolves the contradiction between providing large coverage and managing interference.
2Object-generated harmful factors
If femtocells use closed access mode to reduce interference with macrocells, then interference management is improved, but network coverage and available capacity deteriorate
Solution Approach 1:
The system dynamically adjusts access mode based on macrocell detection results. Rather than permanently operating in closed mode, the femtocell switches to open or hybrid mode when macrocells are not present on target channels, thereby maintaining large coverage and capacity while only applying closed mode when interference prevention is necessary.
3Area of stationary object
If macrocells continue to operate on target channels to maintain coverage, then network coverage is maintained, but bandwidth and resource allocation efficiency for femtocells deteriorates
Solution Approach 1:
The patent applies different access mode configurations to different femtocell locations based on local macrocell presence. This localized adaptation allows macrocells to maintain coverage in areas where they are present while enabling femtocells in macrocell-free areas to operate efficiently in open mode, optimizing resource allocation locally rather than applying a uniform configuration globally.
Solution Approach 2:
The system changes femtocell operational parameters based on local macrocell detection. When macrocells are detected, femtocells switch to closed or hybrid mode to prevent resource conflicts; when no macrocells are present, femtocells operate in open mode to maximize resource utilization and allocation efficiency in that local area.
4Productivity
If femtocells operate in open access mode to provide capacity offload, then traffic offloading capability is improved, but interference with macrocells increases
Solution Approach 1:
The system dynamically selects access mode to enable traffic offloading while managing interference. When macrocells are not present on target channels, femtocells operate in open mode to provide capacity offload. When macrocells are detected, the system switches to closed or hybrid mode to prevent interference, thereby achieving traffic offloading without harmful interference effects.
Data Source
AI summary
Methods and apparatus are disclosed for configuring an access mode of a femtocell. The method includes determining whether a target channel is being used by a macrocell. The method includes, in response to the target channel being used by the macrocell, configuring the access mode to a closed access mode. The method includes in response to the target channel not being used by the macrocell, configuring the access mode to an open or hybrid access mode.